This function calculates the coefficient for hinged opening area according to DIN CEN/TR 16798-8 (DIN SPEC 32739-8).
function CoeffOpeningAreaDIN16798 extends Modelica.Icons.Function; input Modelica.Units.SI.Angle ang(min = 0, max = Modelica.Constants.pi/2) "Window sash opening angle"; output Real cof "Coefficient"; end CoeffOpeningAreaDIN16798;